Secular readings and music for a wedding

Jill • Pro-choice athiest ex-pat, mum of a beautiful boy born nov 2016
I'm planning a civil wedding in the UK and the rules for civil ceremonies here are really strict about being completely secular - including the music and any poetry or readings. I was wondering if anyone has any recommendations for readings or music that are secular? All the books I've looked at seem to be quite religious so I'm struggling!